573
FXUS65 KBYZ 241931
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
131 PM MDT SUN SEP 24 2023
DISCUSSION
TONIGHT THROUGH MONDAY NIGHT...
STRENGTHENING UPPER LEVEL RIDGE WILL BRING DRY & WARMER CONDITIONS
FOR THE NEXT COUPLE OF DAYS. LOOK FOR HIGH TEMPS REACHING NEAR
80F TOMORROW W/ GRADUAL MODERATING NIGHTTIME LOWS. SHERIDAN IS
SITTING ON 127 STRAIGHT DAYS W/O DROPPING BELOW 40F (A RECORD) BUT
THEY COULD TONIGHT. FORECAST IS FOR LOWER 40S BUT THERE IS A 20%
CHANCE THEY GET TO 39F.
ONLY POTENTIAL ISSUE INVOLVES A SMALL RISK OF LOCALIZED FOG IN OUR
FAR EAST LATE TONIGHT. GREATEST CHANCE IS NEAR BAKER BUT IT IS
POSSIBLE FOG DEVELOPS NEAR MILES CITY AND EKALAKA TOO, WHICH
SHOULD BE THE WESTERN EXTENT. THE STRATUS THAT HAS LINGERED FOR
MUCH OF THE DAY IN OUR FAR EAST IS ASSOCIATED WITH DEW POINTS
STILL IN THE LOWER 50S. WINDS WILL SHIFT TO EASTERLY THIS EVENING
SO THERE WON'T BE MUCH BOUNDARY LAYER DRYING...HELPING THE FOG
CAUSE.
JKL
TUESDAY THROUGH SATURDAY...
FOR THE EXTENDED, TUESDAY WILL BE THE WARMEST AND DRIEST DAY WITH
HIGH TEMPERATURES INTO THE 70S AND MID 80S. RIDGING WILL BEGIN TO
BREAK DOWN LATE IN THE DAY WITH A TROUGH FORMING OVER THE PACIFIC
NORTHWEST. A FEW SHORTWAVES WILL RIDE UP THE TROUGH THROUGH
WESTERN MT, LIFTING TO THE NORTHEAST. THE FIRST SHORTWAVE TUESDAY
NIGHT WILL BRING A WEAK COLD FRONT THROUGH THE AREA, COOLING HIGH
TEMPERATURES INTO THE 70S FOR WEDNESDAY. INTO WEDNESDAY NIGHT,
ANOTHER FRONT IS EXPECTED TO MAKE ITS WAY THROUGH THE REGION. WITH
A STRONGER SIGNAL FOR LIFT BETWEEN MODELS, THIS BRINGS THE
POSSIBILITY OF SOME ISOLATED POPS (15-20%) TO THE WEST AND
NORTHERN PORTIONS OF THE CWA. THIS WILL LOWER HIGH TEMPERATURES
INTO THE 60S AND LOW 70S FOR THURSDAY AND FRIDAY. BY FRIDAY, THE
TROUGH WILL DEEPEN AND MOVE EAST INTO MT, GIVING WAY TO BETTER
CHANCES FOR SCATTERED PRECIP AND COOLER TEMPERATURES. HIGH
TEMPERATURES FOR SATURDAY ARE FORECASTED TO BE IN THE 50S AND LOW
60S. WITH DISAGREEMENT ON THE TRACK OF THE LOW A WEEK OUT, PRECIP
COVERAGE WILL BE IRONED OUT THROUGH THE WEEK. TS
AVIATION
LINGERING BROKEN MVFR STRATUS EAST OF KMLS-BROADUS WILL DISSIPATE
BY SUNSET, AND THIS WILL BE FOLLOWED BY WIDESPREAD VFR (SCATTERED
HIGH CLOUDS AT TIMES) TONIGHT & MONDAY UNDER BUILDING HIGH
PRESSURE ALOFT. THERE IS A SMALL RISK OF FOG NEAR KBHK-KMLS FROM
09-15Z...AND THIS WILL BE SOMETHING TO WATCH TONIGHT. JKL
PRELIMINARY POINT TEMP/POPS
MON TUE WED THU FRI SAT SUN
-----------------------------------------------------------
BIL 049/080 050/085 050/076 048/070 046/068 045/061 044/058
00/U 00/U 00/U 11/B 22/W 44/W 54/W
LVM 043/080 046/082 045/074 041/068 040/063 038/056 037/054
00/U 00/N 01/B 22/W 33/W 45/W 55/W
HDN 042/081 044/085 045/077 044/072 043/070 041/063 040/059
00/U 00/U 00/U 10/B 22/W 33/W 53/W
MLS 047/077 050/081 051/075 049/071 047/069 046/063 044/059
00/U 00/U 00/U 10/B 22/W 33/W 43/W
4BQ 044/078 047/082 050/079 050/073 049/074 047/065 046/060
00/U 00/U 00/U 00/U 21/B 32/W 42/W
BHK 044/075 047/075 047/075 048/070 044/069 043/064 042/060
00/U 00/N 00/U 10/B 22/W 33/W 42/W
SHR 042/080 042/084 047/079 045/073 044/071 041/063 040/057
00/U 00/U 00/U 00/U 12/W 33/W 53/W
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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